Adjustable masonry saw

ABSTRACT

The reservoir pan incorporates the saw table tracks and is variable in position with respect to the circular saw blade providing adjustability for reducing the necessity of the operator bending over the edge of the pan when a small workpiece is cut.

United States Patent Harclerode 51 Jan. 18,1972

[54] ADJUSTABLE MASONRY SAW [72] Inventor: John R. Harclerode, PrairieVillage, Kans.

[73] Assignee: Robert G. Evans Company, Kansas City,

[22] Filed: Oct. 12, 1970 [21 1' Appl. No.: 79,869

[521 [1.5. C] ..125/13 l 1 [58] FieldolSearch ..l25/l3, 14

[56] References Cited UNITED STATES PATENTS Iones .,125/14 2,455,11311/1948 Coates ..125/13 SS Primary Examiner-Harold D. WhiteheadAttorney-Fishburn, Gold & Litman [57] ABSTRACT The resewoir panincorporates the saw table tracks and is variable in position withrespect to the circular saw blade providing adjustability for reducingthe necessity of the operator bending over the edge of the pan when asmall workpiece is cut.

8 Claims, 3 Drawing Figures PATENTED m 1 8 19. 2

I .w' VENTOR. John R. Wm clerode My Jim m AT TGRNEYS ADJUSTABLE MASONRYSAW This invention relates to masonry saws and more particularly to therelatively lightweight, circular blade saws commonly used at aconstruction site for cutting slate, granite, tile, marble and the like.

Such circular masonry saws normally include a reservoir pan locatedbeneath the saw blade for retaining cooling liquids which arecontinuously pumped therefrom and directed against the rotating blade toprovide cooling. Associated with or adjacent to the pan is a workpiecesupport table movable on tracks or the like upon which a workpiece maybe guided into the saw blade by the operators hands. l-leretofore, the

reservoir pan was normally either maintained in fixed position on astand which also supported the saw blade and driving assembly or theassembly stand was received within the pan. In either case, regardlessof the size of the workpiece to be cut, the pan extended forwardly ofthe blade a distance sufficient to underlay the largest workpiece forwhich the apparatus was designed. When a small workpiece is to be cut,the protruding pan remains in position and forces the operator to bendover the front edge thereof to reach the cutting area. This isinconvenient, uncomfortable and adds to operator fatigue and labor costsin completing the job. Further, it is often difficult to remove the panfor cleaning out the sawdust sludge which tends to build up therein.

In the practice of this invention, the pan is slidably supported forselective horizontal movement parallel to the blade of the circular sawblade, in the manner of a drawer. The pan is, thus, easily adjustable toconveniently locate the saw table in optimum position for the particularsize of workpiece to be cut. This is accomplished, in this example, byfixing the saw table tracks within the pan and slidably receiving thepan on a bed portion formed by the rigid frame supporting the saw bladedriving assembly. With this arrangement, the most comfortable positionfor sawing the workpiece at hand may be easily obtained by the operator.Also, the pan is very simply removed completely for cleaning.

It is, therefore, the principal objects of the present invention toprovide a masonry saw which includes an arrangement for easily adjustingthe position of the reservoir pan and saw table tracks with respect tothe saw blade; to provide such apparatus which is more efficient in useand less tiring to the operator; to provide such a device which lendsitself to easy portability; and to provide such apparatus which issimple and economical in construction, easily cleaned and maintained,and well adapted for its intended purpose.

Other objects and advantages of this invention will become apparent fromthe following description taken in connection with the accompanyingdrawings wherein are set forth by way of illustration and examplecertain embodiments of this invention.

FIG. 1 is a fragmentary perspective view showing masonry saw apparatusembodying this invention with the pan recessed for handling smallerworkpieces.

FIG. 2 is a fragmentary perspective view of the apparatus shown in FIG.1 with the pan extended forwardly for handling larger workpieces.

FIG. 3 is a fragmentary perspective view of the saw assembly frameshowing details of the pan supporting legs, the pan being indicated bybroken lines.

Referring to the drawings in more detail:

The reference numeral 1 generally indicates a masonry saw embodying thisinvention. The masonry saw 1 includes a saw assembly 2 having a drivemotor 3 at one end and an abrasive circular saw blade 4 at the otherend. The drive motor 3 is adapted, by known drive means (not shown) forrotating the circular saw blade 4 at a high speed about a horizontalaxis.

The masonry saw 1 includes a rigid frame 5 which, in this example, isshown supported on a suitable table 6, however, it is to be understoodthat the frame 5 may beself-supporting on legs (not shown) designed forthe purpose. The frame 5 includes a pair of parallel, spaced-apart,horizontally projecting legs 7 and 8 defining a bed portion 10 elongatedin the direction of the plane containing the circular saw blade 4. A

standard 10 extends vertically from a side channel 11 forming aconnecting structure with the horizontal legs 7 and 8. The saw assembly2 is pivotally supported on the standard 10 in the known manner andpositioned to locate the circular saw blade 4 in a vertical planegenerally bisecting the bed portion 10 and elevated'thereabove.

An open elongated rectangular reservoir pan 12 is adapted to containcooling liquid (not shown) which is continuously drawn therefrom andpumped against the saw blade 4 by known devices (not shown) during sawoperation. Trackforming members 13 and 14 are formed of suitablestructural material and extend longitudinally within the pan inspacedapart parallel relation. In this example, the track members arewelded at opposite ends thereof to the interior surfaces of the pan endwalls 15 and 16. A workpiece supporting cart or saw table 17 hassuitable track wheels 18 engaging the respective track members 13 and 14for guided, longitudinal, reciprocal movement horizontally along the panfor directing a workpiece (not shown) against the circular saw blade 4.

The reservoir pan 12 is longitudinally slidably received on andsupported by the projecting legs 7 and 8 for selective horizontalmovement parallel to the plane of the saw blade 4. Unwanted lateralmovement of the pan 12 is prevented by means of upstanding cars 19formed, where necessary, at ends of the respective horizontal legs 7 and:8.

Thus, the reservoir pan 12 is selectively adjustable in horizontalposition beneath the circular saw blade 4 to optimally position thefront end wall 15 of the pan for the size workpiece at hand. Inoperation, if it is desired to cut a larger workpiece (not shown) thepan 12 is withdrawn forwardly to a position, such as shown in FIG. 2,whereby considerable area is available between the fence or backstop 20of the saw table 17 and the circular saw blade 4. If, however, theoperator wishes to cut a smaller workpiece, the pan 12 is merely pushedrearwardly, for example, to the position shown in FIG. 1, whereupon theoperator may produce a cut without uncomfortable bendingor reachingotherwise required. The pan 12 is easily withdrawn completely from theframe 5 for cleaning.

It is to be understood that while one form of this invention has beenillustrated and described, it is not to be limited thereto exceptinsofar as such limitations are included in the following claims.

What I claim and desire to secure by Letters Patent is:

l. A saw comprising: I

a. a saw assembly having a driven circular saw blade adapted forrotation about a horizontal axis,

b. a frame including a horizontal bed portion and a standard extendingupwardly from said bed portion, said saw assembly being supported onsaid standard and positioned to locate said circular saw blade abovesaid bed portion,

c. a pan on said bed portion, a workpiece supporting saw table, trackmeans movable with said pan and adapted to provide reciprocal guidancefor said saw table above said pan and beneath said saw blade,

d. said pan being movably received on said bed portion for selectivehorizontal movement parallel to the plane of said saw blade, wherebysaid pan is adjustable in position beneath said saw blade to provideconvenience in cutting various size workpieces resting on said sawtable.

2. The saw as set forth in claim 1 wherein:

a. said saw assembly has a drive motor at one end thereof and saidcircular saw blade at the other end thereof, said circular saw bladebeing adapted for driving rotation by said motor,

b. said motor being elevated above said pan.

3. The saw as set forth in claim 1 wherein:

a. said frame is constructed of rigid structural members and said bedportion is defined by a pair of spaced-apart horizontally projectinglegs.

4. The saw as set forth in claim 3 wherein:

a. said bed legs have upstanding ears for laterally retaining said panthereon.

5. The saw as set forth in claim 1 wherein:

a. said track means comprises a pair of parallel, spacedapart trackmembers secured to said pan. 8. The saw as set forth in claim 7 wherein:a. said pan has opposed upstanding end walls, and b. said track membershave opposite ends thereof welded to said end walls.

* k OI

1. A saw comprising: a. a saw assembly having a driven circular sawblade adapted for rotation about a horizontal axis, b. a frame includinga horizontal bed portion and a standard extending upwardly from said bedportion, said saw assembly being supported on said standard andpositioned to locate said circular saw blade above said bed portion, c.a pan on said bed portion, a workpiece supporting saw table, track meansmovable with said pan and adapted to provide reciprocal guidance forsaid saw table above said pan and beneath said saw blade, d. said panbeing movably received on said bed portion for selective horizontalmovement parallel To the plane of said saw blade, whereby said pan isadjustable in position beneath said saw blade to provide convenience incutting various size workpieces resting on said saw table.
 2. The saw asset forth in claim 1 wherein: a. said saw assembly has a drive motor atone end thereof and said circular saw blade at the other end thereof,said circular saw blade being adapted for driving rotation by saidmotor, b. said motor being elevated above said pan.
 3. The saw as setforth in claim 1 wherein: a. said frame is constructed of rigidstructural members and said bed portion is defined by a pair ofspaced-apart horizontally projecting legs.
 4. The saw as set forth inclaim 3 wherein: a. said bed legs have upstanding ears for laterallyretaining said pan thereon.
 5. The saw as set forth in claim 1 wherein:a. said saw blade is positioned in a vertical plane generally bisectingsaid bed portion.
 6. The saw as set forth in claim 1 wherein: a. saidpan is elongated and rectangular in shape and extends longitudinally ofthe plane containing said saw blade.
 7. The saw as set forth in claim 1wherein: a. said track means comprises a pair of parallel, spaced-aparttrack members secured to said pan.
 8. The saw as set forth in claim 7wherein: a. said pan has opposed upstanding end walls, and b. said trackmembers have opposite ends thereof welded to said end walls.